Of the following, which is a proposed explanation for an observation?

a. principle
b. law
c. theory
d. fact
e. hypothesis


E

Biology & Microbiology

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A DNA molecule used to carry a foreign gene into a host organism is called a

A. plasmid. B. probe. C. vector. D. blot.

Biology & Microbiology

The study of the crown gall tumor found

A. a bacterial plasmid promoter that was similar to plant promoters. B. an R plasmid. C. incorporation of the bacterial chromosome into the plant. D. incorporation of the plant chromosome into the bacteria.

Biology & Microbiology

Each of the following small molecules easily diffuses through the cell membrane EXCEPT ____

a. steroid hormones b. O2 c. H2O d. glucose e. CO2

Biology & Microbiology

What is the 1st stage of Meiosis I?

a. Prophase I b. Prophase c. Prophase II d. Metaphase I e. Interphase

Biology & Microbiology